Switch to mojo localstorage backend by default.

content/browser/dom_storage/local_storage_context_mojo.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_DOM_STORAGE_LOCAL_STORAGE_CONTEXT_MOJO_H_
 #define CONTENT_BROWSER_DOM_STORAGE_LOCAL_STORAGE_CONTEXT_MOJO_H_
 
 #include <memory>
 
 #include "base/files/file_path.h"
@@ skipping 10 matching lines @@
 namespace storage {
 class SpecialStoragePolicy;
 }
 
 namespace content {
 
 class DOMStorageTaskRunner;
 class LevelDBWrapperImpl;
 struct LocalStorageUsageInfo;
 
-// Used for mojo-based LocalStorage implementation (behind --mojo-local-storage
-// for now).
+// Used for mojo-based LocalStorage implementation (can be disabled with
+// --disable-mojo-local-storage for now).
 // Created on the UI thread, but all further methods are called on the IO
 // thread. Furthermore since destruction of this class can involve asynchronous
 // steps, it can only be deleted by calling ShutdownAndDelete (on the IO
 // thread),
 class CONTENT_EXPORT LocalStorageContextMojo {
  public:
   using GetStorageUsageCallback =
       base::OnceCallback<void(std::vector<LocalStorageUsageInfo>)>;
 
   LocalStorageContextMojo(
@@ skipping 20 matching lines @@
   // Called when the owning BrowserContext is ending.
   // Schedules the commit of any unsaved changes and will delete
   // and keep data on disk per the content settings and special storage
   // policies.
   void ShutdownAndDelete();
 
   // Clears any caches, to free up as much memory as possible. Next access to
   // storage for a particular origin will reload the data from the database.
   void PurgeMemory();
 
-  leveldb::mojom::LevelDBDatabaseAssociatedRequest DatabaseRequestForTesting();
+  void SetDatabaseForTesting(
+      leveldb::mojom::LevelDBDatabaseAssociatedPtr database);
 
   // Converts a string from the old storage format to the new storage format.
   static std::vector<uint8_t> MigrateString(const base::string16& input);
 
  private:
   friend class MojoDOMStorageBrowserTest;
 
   class LevelDBWrapperHolder;
 
   ~LocalStorageContextMojo();
@@ skipping 64 matching lines @@
   // Used to access old data for migration.
   scoped_refptr<DOMStorageTaskRunner> task_runner_;
   base::FilePath old_localstorage_path_;
 
   base::WeakPtrFactory<LocalStorageContextMojo> weak_ptr_factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_DOM_STORAGE_LOCAL_STORAGE_CONTEXT_MOJO_H_